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Not able add pins to symbol; restricted by string length

ajmr

Hi,

I have been trying to create a symbol with considerably large number of pins. I am adding required pins in "pin specifications" of "symbol Generation Options" dialogue box. But after a certain point, I'm not able to add pins and I get the following warning in CIW, saying string length too long

Is there a way around this problem?

Regards

Ajay

Parents Reply Children
  • in reply to Andrew Beckett

    Hi,

    Thanks for the quick reply.

    I'm using virtuoso 6.1.8-64b

    That was from Create-> Cellview-> From CellView. I was rearranging the auto generated pin specifactions and putting most of the pins to the left side of the symbol

    Ajay

  • in reply to ajmr

    Hi Ajay,

    You must have an extremely large number of pins (with long names) to hit this limit. I managed to reproduce it with a completely made-up automatically generated list of pins, but I'm a little surprised you've hit it with a real design - but I guess it's possible to have such a huge number of separate pins.

    Nobody seems to have reported this specific issue. The error is due to a limitation in the UI technology which has come up in a few applications, but whilst it could potentially be fixed generally, it's usually a symptom of the fact that the form is using an inappropriate widget to edit such a large number of entries - after all, who wants to interact with a single-line string field with over 8000 characters to define a pin list?

    The problem doesn't seem to happen unless you start moving around which pins you want to be on different sides - if you just OK the form (or don't show the form) the auto-generation will continue. The schSchemToPinList and schPinListToSymbol can't be used to solve this as they don't give control over the symbol side - a sort-of solution can be found here: How to generate a symbol using SKILL code and control which side of the symbol a pin gets placed on?

    So I think you should contact customer support. I could file a request with R&D, but it would be far better to come from the customer facing this as you can describe your precise needs (mine will be theoretical rather than practical).

    Regards,

    Andrew 

  • in reply to Andrew Beckett

    Thank you,

    I will try the suggested solution.

    Ajay

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